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Add preliminary support for IRIX's n32 abi to the MIPS's multi-arch code.

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This commit is contained in:
Andrew Cagney
2000-05-11 03:40:08 +00:00
parent de950844b3
commit 0dadbba0df
3 changed files with 146 additions and 59 deletions
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174
gdb/mips-tdep.c
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@@ -40,6 +40,18 @@
#include "elf-bfd.h"
/* All the possible MIPS ABIs. */
enum mips_abi
{
MIPS_ABI_UNKNOWN,
MIPS_ABI_N32,
MIPS_ABI_O32,
MIPS_ABI_O64,
MIPS_ABI_EABI32,
MIPS_ABI_EABI64
};
struct frame_extra_info
{
mips_extra_func_info_t proc_desc;
@@ -91,7 +103,7 @@ struct gdbarch_tdep
/* from the elf header */
int elf_flags;
/* mips options */
int mips_eabi;
enum mips_abi mips_abi;
enum mips_fpu_type mips_fpu_type;
int mips_last_arg_regnum;
int mips_last_fp_arg_regnum;
@@ -103,7 +115,8 @@ struct gdbarch_tdep
#if GDB_MULTI_ARCH
#undef MIPS_EABI
#define MIPS_EABI (gdbarch_tdep (current_gdbarch)->mips_eabi)
#define MIPS_EABI (gdbarch_tdep (current_gdbarch)->mips_abi == MIPS_ABI_EABI32 \
|| gdbarch_tdep (current_gdbarch)->mips_abi == MIPS_ABI_EABI32)
#endif
#if GDB_MULTI_ARCH
@@ -171,7 +184,7 @@ mips_saved_regsize ()
#if GDB_MULTI_ARCH
#undef MIPS_DEFAULT_STACK_ARGSIZE
#define MIPS_DEFAULT_STACK_ARGSIZE (gdbarch_tdep (current_gdbarch)->mips_default_statck_argsize)
#define MIPS_DEFAULT_STACK_ARGSIZE (gdbarch_tdep (current_gdbarch)->mips_default_stack_argsize)
#elif !defined (MIPS_DEFAULT_STACK_ARGSIZE)
#define MIPS_DEFAULT_STACK_ARGSIZE (MIPS_DEFAULT_SAVED_REGSIZE)
#endif
@@ -3753,6 +3766,7 @@ mips_gdbarch_init (info, arches)
char *ef_mips_abi;
int ef_mips_bitptrs;
int ef_mips_arch;
enum mips_abi mips_abi;
/* Extract the elf_flags if available */
if (info.abfd != NULL
@@ -3761,6 +3775,30 @@ mips_gdbarch_init (info, arches)
else
elf_flags = 0;
/* Check ELF_FLAGS to see if it specifies the ABI being used. */
switch ((elf_flags & EF_MIPS_ABI))
{
case E_MIPS_ABI_O32:
mips_abi = MIPS_ABI_O32;
break;
case E_MIPS_ABI_O64:
mips_abi = MIPS_ABI_O64;
break;
case E_MIPS_ABI_EABI32:
mips_abi = MIPS_ABI_EABI32;
break;
case E_MIPS_ABI_EABI64:
mips_abi = MIPS_ABI_EABI32;
break;
default:
mips_abi = MIPS_ABI_UNKNOWN;
break;
}
#ifdef MIPS_DEFAULT_ABI
if (mips_abi == MIPS_ABI_UNKNOWN)
mips_abi = MIPS_DEFAULT_ABI;
#endif
/* try to find a pre-existing architecture */
for (arches = gdbarch_list_lookup_by_info (arches, &info);
arches != NULL;
@@ -3770,6 +3808,8 @@ mips_gdbarch_init (info, arches)
using. */
if (gdbarch_tdep (current_gdbarch)->elf_flags != elf_flags)
continue;
if (gdbarch_tdep (current_gdbarch)->mips_abi != mips_abi)
continue;
return arches->gdbarch;
}
@@ -3784,55 +3824,82 @@ mips_gdbarch_init (info, arches)
set_gdbarch_float_bit (gdbarch, 32);
set_gdbarch_double_bit (gdbarch, 64);
set_gdbarch_long_double_bit (gdbarch, 64);
switch ((elf_flags & EF_MIPS_ABI))
tdep->mips_abi = mips_abi;
switch (mips_abi)
{
case E_MIPS_ABI_O32:
case MIPS_ABI_O32:
ef_mips_abi = "o32";
tdep->mips_eabi = 0;
tdep->mips_default_saved_regsize = 4;
tdep->mips_default_stack_argsize = 4;
tdep->mips_fp_register_double = 0;
tdep->mips_last_arg_regnum = ZERO_REGNUM + 7;
tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 15;
tdep->mips_regs_have_home_p = 1;
set_gdbarch_long_bit (gdbarch, 32);
set_gdbarch_ptr_bit (gdbarch, 32);
set_gdbarch_long_long_bit (gdbarch, 64);
break;
case E_MIPS_ABI_O64:
case MIPS_ABI_O64:
ef_mips_abi = "o64";
tdep->mips_eabi = 0;
tdep->mips_default_saved_regsize = 8;
tdep->mips_default_stack_argsize = 8;
tdep->mips_fp_register_double = 1;
tdep->mips_last_arg_regnum = ZERO_REGNUM + 7;
tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 15;
tdep->mips_regs_have_home_p = 1;
set_gdbarch_long_bit (gdbarch, 32);
set_gdbarch_ptr_bit (gdbarch, 32);
set_gdbarch_long_long_bit (gdbarch, 64);
break;
case E_MIPS_ABI_EABI32:
case MIPS_ABI_EABI32:
ef_mips_abi = "eabi32";
tdep->mips_eabi = 1;
tdep->mips_default_saved_regsize = 4;
tdep->mips_default_stack_argsize = 4;
tdep->mips_fp_register_double = 0;
tdep->mips_last_arg_regnum = ZERO_REGNUM + 11;
tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 19;
tdep->mips_regs_have_home_p = 0;
set_gdbarch_long_bit (gdbarch, 32);
set_gdbarch_ptr_bit (gdbarch, 32);
set_gdbarch_long_long_bit (gdbarch, 64);
break;
case E_MIPS_ABI_EABI64:
case MIPS_ABI_EABI64:
ef_mips_abi = "eabi64";
tdep->mips_eabi = 1;
tdep->mips_default_saved_regsize = 8;
tdep->mips_default_stack_argsize = 8;
tdep->mips_fp_register_double = 1;
tdep->mips_last_arg_regnum = ZERO_REGNUM + 11;
tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 19;
tdep->mips_regs_have_home_p = 0;
set_gdbarch_long_bit (gdbarch, 64);
set_gdbarch_ptr_bit (gdbarch, 64);
set_gdbarch_long_long_bit (gdbarch, 64);
break;
case MIPS_ABI_N32:
ef_mips_abi = "n32";
tdep->mips_default_saved_regsize = 4;
tdep->mips_default_stack_argsize = 8;
tdep->mips_fp_register_double = 1;
tdep->mips_last_arg_regnum = ZERO_REGNUM + 11;
tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 19;
tdep->mips_regs_have_home_p = 0;
set_gdbarch_long_bit (gdbarch, 32);
set_gdbarch_ptr_bit (gdbarch, 32);
set_gdbarch_long_long_bit (gdbarch, 64);
break;
default:
ef_mips_abi = "default";
tdep->mips_eabi = 0;
tdep->mips_default_saved_regsize = MIPS_REGSIZE;
tdep->mips_default_stack_argsize = MIPS_REGSIZE;
tdep->mips_fp_register_double = (REGISTER_VIRTUAL_SIZE (FP0_REGNUM) == 8);
tdep->mips_last_arg_regnum = ZERO_REGNUM + 11;
tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 19;
tdep->mips_regs_have_home_p = 1;
set_gdbarch_long_bit (gdbarch, 32);
set_gdbarch_ptr_bit (gdbarch, 32);
set_gdbarch_long_long_bit (gdbarch, 64);
break;
}
tdep->mips_default_stack_argsize = tdep->mips_default_saved_regsize;
/* FIXME: jlarmour/2000-04-07: There *is* a flag EF_MIPS_32BIT_MODE
that could indicate -gp32 BUT gas/config/tc-mips.c contains the
@@ -3890,26 +3957,6 @@ mips_gdbarch_init (info, arches)
}
#endif
/* Select either of the two alternative ABI's */
if (tdep->mips_eabi)
{
/* EABI uses R4 through R11 for args */
tdep->mips_last_arg_regnum = 11;
/* EABI uses F12 through F19 for args */
tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 19;
/* EABI does not reserve home space for registers */
tdep->mips_regs_have_home_p = 0;
}
else
{
/* old ABI uses R4 through R7 for args */
tdep->mips_last_arg_regnum = 7;
/* old ABI uses F12 through F15 for args */
tdep->mips_last_fp_arg_regnum = FP0_REGNUM + 15;
/* Old ABI reserves home space for registers */
tdep->mips_regs_have_home_p = 1;
}
/* enable/disable the MIPS FPU */
if (!mips_fpu_type_auto)
tdep->mips_fpu_type = mips_fpu_type;
@@ -3967,42 +4014,51 @@ mips_gdbarch_init (info, arches)
if (gdbarch_debug)
{
fprintf_unfiltered (gdb_stderr,
"mips_gdbarch_init: (info)elf_flags = 0x%x\n",
elf_flags);
fprintf_unfiltered (gdb_stderr,
fprintf_unfiltered (gdb_stdlog,
"mips_gdbarch_init: (info)ef_mips_abi = %s\n",
ef_mips_abi);
fprintf_unfiltered (gdb_stderr,
fprintf_unfiltered (gdb_stdlog,
"mips_gdbarch_init: (info)ef_mips_arch = %d\n",
ef_mips_arch);
fprintf_unfiltered (gdb_stderr,
fprintf_unfiltered (gdb_stdlog,
"mips_gdbarch_init: (info)ef_mips_bitptrs = %d\n",
ef_mips_bitptrs);
fprintf_unfiltered (gdb_stderr,
"mips_gdbarch_init: MIPS_EABI = %d\n",
tdep->mips_eabi);
fprintf_unfiltered (gdb_stderr,
"mips_gdbarch_init: MIPS_LAST_ARG_REGNUM = %d\n",
tdep->mips_last_arg_regnum);
fprintf_unfiltered (gdb_stderr,
"mips_gdbarch_init: MIPS_LAST_FP_ARG_REGNUM = %d (%d)\n",
tdep->mips_last_fp_arg_regnum,
tdep->mips_last_fp_arg_regnum - FP0_REGNUM);
fprintf_unfiltered (gdb_stderr,
"mips_gdbarch_init: tdep->mips_fpu_type = %d (%s)\n",
fprintf_unfiltered (gdb_stdlog,
"mips_gdbarch_init: MIPS_REGSIZE = %d\n",
MIPS_REGSIZE);
fprintf_unfiltered (gdb_stdlog,
"mips_gdbarch_init: tdep->elf_flags = 0x%x\n",
tdep->elf_flags);
fprintf_unfiltered (gdb_stdlog,
"mips_gdbarch_init: tdep->mips_abi = %d\n",
tdep->mips_abi);
fprintf_unfiltered (gdb_stdlog,
"mips_gdbarch_init: tdep->mips_fpu_type = %d (%s)\n",
tdep->mips_fpu_type,
(tdep->mips_fpu_type == MIPS_FPU_NONE ? "none"
: tdep->mips_fpu_type == MIPS_FPU_SINGLE ? "single"
: tdep->mips_fpu_type == MIPS_FPU_DOUBLE ? "double"
: tdep->mips_fpu_type == MIPS_FPU_SINGLE ? "single"
: tdep->mips_fpu_type == MIPS_FPU_DOUBLE ? "double"
: "???"));
fprintf_unfiltered (gdb_stderr,
"mips_gdbarch_init: tdep->mips_default_saved_regsize = %d\n",
fprintf_unfiltered (gdb_stdlog,
"mips_gdbarch_init: tdep->mips_last_arg_regnum = %d\n",
tdep->mips_last_arg_regnum);
fprintf_unfiltered (gdb_stdlog,
"mips_gdbarch_init: tdep->mips_last_fp_arg_regnum = %d (%d)\n",
tdep->mips_last_fp_arg_regnum,
tdep->mips_last_fp_arg_regnum - FP0_REGNUM);
fprintf_unfiltered (gdb_stdlog,
"mips_gdbarch_init: tdep->mips_default_saved_regsize = %d\n",
tdep->mips_default_saved_regsize);
fprintf_unfiltered (gdb_stderr,
"mips_gdbarch_init: tdep->mips_fp_register_double = %d (%s)\n",
fprintf_unfiltered (gdb_stdlog,
"mips_gdbarch_init: tdep->mips_fp_register_double = %d (%s)\n",
tdep->mips_fp_register_double,
(tdep->mips_fp_register_double ? "true" : "false"));
(tdep->mips_fp_register_double ? "true" : "false"));
fprintf_unfiltered (gdb_stdlog,
"mips_gdbarch_init: tdep->mips_regs_have_home_p = %d\n",
tdep->mips_regs_have_home_p);
fprintf_unfiltered (gdb_stdlog,
"mips_gdbarch_init: tdep->mips_default_stack_argsize = %d\n",
tdep->mips_default_stack_argsize);
}
return gdbarch;